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Lecture: 9 Q&A (iq06)

Selected questions from email inquiries:

1. Ch2, HW1, #4. Fnet at the top of the rising ball trajectory

2. Problem 3P40. Average force exerted by a bouncing ball

3. Problem 2P40. Average force when Fnet is constant for NR case, and for R case.

4. Comment on the Gravitational force where M and m have finite sizes

Announcement and Reminders:

1. Midterm-1 Tonight, 7pm, Wel 2.224 (be there by 6:50, if possible).

o Closed book. Course summary1 will be distributed.

o Bring your calculator. You may use programmable calculator, however you need to zero the memory first.

o Exam format multiple choices. No negative scoring for wrong answers. If you do not know the answer, is to your advantage to guess an answer.

2. SSD special arrangement: Please see me after the class to confirm the arrangement.

3. Errata for our textbook have been posted under MI-curriculum on our homepage.